Cut off the old flowers the foliage will die back naturally in the Autumn.
If you cut the main flower back to the buds on the stem you will get a second flush of flowers.
Lilies are beautiful in the garden or as cut flowers.
Tiger lilies are a bulb, and will go dormant. The leaves will dry up and turn brown. When they do, it is safe to cut them all the way back. They will come back next year. If there are flowers that are wilting, you can deadhead them throughout the growing season.
If they are Summer fruiting raspberries then cut out the canes that fruited and tie in the new ones and they will fruit next year. The sooner after fruiting this is done the better.
Some gardeners do cut back the leaves in fall to prevent mold and disease.
No. If you live in a cold climate, only cut the stems down to eight or ten inches in the fall, so that winter-kill will only effect the top portions of the stems, and so that the remaining stems can trap snow, which will insulate the crown of the plant. In a warm climate, cut the plant down to about one third its summer size, and then in the spring trim off any part of the stem that has died.
Once the plant goes yellow (mine in upstate NY is green most of the summer ) then you can cut back. Moving or splitting is a fall or spring job not summer.
Cut off the old flower stems leave the leaves.
Yes their will be their said to be released end of summer early fall of 2012.
After blooming is done, you can cut back the flower stalks, but don't cut back the leaves until you are ready to separate and transplant irises in the fall. When you take them out to replant, cut the leaves down into about a 4 to 5 inch fan shape.
Yes, you can trim them back to about 3 inches in this shape "^".
Wait until the flower spike dies back then cut it just above the leaf.